Unit Test — Unit test Answers

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34
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The defining characteristic of potable water is that it _______.

A
is used as tap water
B
can be used for washing and irrigation
C
can be used and consumed without risk
D
is delivered through pipes
35
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Changing your toilet can reduce water pollution because _______.

A
the sewage is partially treated in the toilet before entering the sewer system
B
chemicals added by new toilets neutralize the pathogens in the water
C
more efficient plumbing uses more water and creates larger volumes of waste
D
more efficient plumbing uses less water and creates smaller volumes of waste
36

Which of the following is a way in which water resources are consumed?

A
drinking
B
industry
C
business
D
all of the above
37

Which of the following is least likely to have difficulties with economic access to potable water?

A
Zimbabwe
B
Australia
C
India
D
None of the above
38

Which of the following processes requires separate plumbing?

A
water reclamation
B
desalination
C
greywater use
D
none of the above
39

A heat source could be considered a source of pollution..

A
T
B
F
40

Surface water standards for recreation are determined by the Clean Water Act.

A
T
B
F
41

Australian aborigines could not use wells in the desert due to lack of groundwater.

A
T
B
F
42

Explain how groundwater overdraft occurs and its likely consequences.

Answer:

Groundwater overdraft occurs when the rate of pumping from an aquifer exceeds its natural recharge rate. Likely consequences include falling water tables, dry wells, land subsidence, reduced stream flow, and saltwater intrusion in coastal areas.

43

Compare the Safe Water Drinking Act and the Clean Water Act.

Answer not available
44

Explain why water is critically important to most facets of human life.

Answer not available
45

Which of the following is not a risk factor for water intoxication?

A
a low body mass
B
heat stress
C
resting
D
overexertion
46

Which of the following is not a risk factor for water intoxication?

A
a low body mass
B
heat stress
C
resting
D
overexertion
47

Explain why the amount of water a person needs to survive can be highly variable.

Answer not available
48

Which of the following activities depend upon the availability of supplies of freshwater?

A
agriculture
B
bathing
C
drinking
D
all of the above
49

Which of the following is true about Earth's supplies of freshwater?

A
Most liquid freshwater is stored in rivers and lakes.
B
Groundwater is a significant reservoir of liquid freshwater.
C
Liquid freshwater is about half of all the water on Earth.
D
None of the above.
50

Explain the relationship between overpopulation and diminishing water supplies.

Answer not available

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